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Chinese Journal of Cell and Stem Cell(Electronic Edition) ›› 2020, Vol. 10 ›› Issue (02): 67-75. doi: 10.3877/cma.j.issn.2095-1221.2020.02.001

Special Issue:

• Original Research • Previous Articles     Next Articles

Analysis of complications of haploid hematopoietic stem cell transplantation in children with severe aplastic anemia

Bohan Li1, Qin Lu1, Xinni Bian1, Yixin Hu1, Li Gao1, Defei Zheng1, Peifang Xiao1, Jun Lu1, Jie Li1, Ziyun Lin1, Ruonan Sun1, Xiaying Zhao1, Bowen Li1, Le Li1, Shaoyan Hu1,()   

  1. 1. Department of Hematology, Children's Hospital of Soochow University, Suzhou 215000, China
  • Received:2019-10-23 Online:2020-04-01 Published:2020-04-01
  • Contact: Shaoyan Hu
  • About author:
    Corresponding author:Hu Shaoyan, Email:

Abstract:

Objective

Compared the incidence and severity of complications of haploid transplantation and sibling donor allogeneic hematopoietic stem cell transplantation (sib-HSCT) in children with severe aplastic anemia (SAA) .

Methods

A total of 56 children with severe aplastic anemia treated in the children's hospital of Soochow University from January 1, 2010 to December 31, 2018 were enrolled in the study, and divided into treatment group (performed the haploidentical transplantation, n =35) and control group (performed the sib-HSCT, n = 21) based on the different treatments. Mann-Whitney U test was used to compare the difference of age, the diagnostic distance, the total number of mononuclear cells, CD34+ cells, the median follow-up time, the time of granulocyte engraftment and platelet engraftment, and the grade data (the degree of blood donor and recipient compatibility, aGVHD degree, cGVHD degree hemorrhagic cystitis degree, leakage syndrome degree) between two groups. Sex, disease type, donor and recipient sex, donor and recipient blood type, pretreatment conditioning regimen, CD20 antibody use, HLA matching, donor source, graft source, engraftment syndrome, CMV, EBV, hemorrhagic cystitis grade, leakage syndrome grade, number of deaths, number of engraftment failure and number of poor bone marrow function were analyzed by chi-square test. The survival curve and cumulative incidence were drawn by Kaplan-Meier method. Log-rank test was used to analyze the statistical differences between groups.

Results

Compared with the control group, the reconstruction of CD19+ B cells in the treatment group was delayed, while the number of CD16+ CD56+ NK cells began to increase 6 months after transplantation and gradually reached the level of the control group. Compared with the control group, the cumulative incidences of aGVHD, cGVHD, implantation syndrome and myeloproliferation in the treatment group (14.29﹪±7.64﹪vs 57.14﹪±8.36﹪, 11.67﹪±7.75﹪vs 61.59﹪±9.65﹪, 9.53﹪± 6.41﹪vs 74.86﹪±7.43﹪, 0.0﹪vs 14.29﹪ ± 5.91﹪) , which were statistically significant (P < 0.05) . There with no statistically difference in the incidence of CMV and EBV infection, 5-year overall survival (OS) , failure free survival (FFS) , GVHD failure free survival (GFFS) , III-IV degrees , the cumulative incidence of aGVHD and extensive cGVHD between two groups (P > 0.05) .

Conclusion

Haploid transplantation is an effective treatment for children with SAA, but compared with siblings of hematopoietic stem cell transplantation, the incidence of GVHD, engraftment syndrome and poor graft function are higher. Optimizing the haploid transplantation treatment is expected to reduce complications and improve the quality of children with severe aplastic anemia.

Key words: Haploid, Hematopoietic stem cell transplantation, Aplastic anemia, Graft versus host disease, Children

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